Back panel for clamshell griddle



FIG. 1 is a front perspective view of a back panel for a clamshell griddle;

FIG. 2 is a front view thereof;

FIG. 3 is a first side view thereof;

FIG. 4 is a second side view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof; and,

FIG. 7 is a perspective view of the back panel being used in conjunction with a clamshell griddle.

The broken lines showing environment form no part of the claimed design. 

CLAIM The ornamental design for a back panel for a clamshell griddle, as shown and described. 